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Investigation of oxy-fuel combustion for methane and acid gas in a diffusion flame

Chinese Journal of Chemical Engineering 2024年第1期65卷 106-116页

作者： Songling Guo Xun Tao Fan Zhou Mengyan Yu Yufan Wu Yunfei Gao Lu Ding Fuchen Wang Institute of Clean Coal Technology East China University of Science and TechnologyShanghai 200237China

Co-combustion of methane(CH4)and acid gas(AG)is required to sustain the temperature in Claus reaction *** this study,oxy-fuel combustion of methane and acid gas has been experimentally studied in a diffusion *** equivalence ratios(ER=1.0,1.5,2.0)and CH_(4)-addition ratios(CH_(4)/AG=0.3,0.5,0.7)were examined and the flame was interpreted by analyzing the distributions of the temperature and species concentration along central ***_(4)-AG diffusion flame could be classified into three sections namely initial reaction,oxidation and complex reaction *** oxidation of CH_(4)and H_(2)S was noted in the first section wherein H_(2)S was preferred and both were mainly proceeding decomposition and partial ***_(2)was formed at oxidation section together with obvious presence of H2 and ***,H2 and CO were inclined to be sustained under fuel rich condition in the complex reaction *** ER and increasing CH4/AG contributed to higher temperature,H_(2)S and CH_(4)oxidation and CO_(2)*** a growing trend for CH_(4)and AG to convert into H_(2),CO and SO_(2)could be *** this factor enhanced the generation of CS2 and COS in the flame inner core by interactions of CH4 and CO_(2)with sulfur *** was formed through the interactions of CO and CO_(2)with sulfur *** CS_(2)production directly relied on reaction of CH_(4)with sulfur *** concentration of COS was greater than CS_(2)since CS_(2)was probably inhibited due to the presence of H_(2).COS and CS_(2)could be consumed by further oxidation or other complex reactions.

关键词： acid gas Methane Oxy-fuel combustion Oxidation Chemical analysis Carbon sulfides

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Analyzing solubility of acid gas and light alkanes in triethylene glycol

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Journal of Natural gas Chemistry 2008年第1期17卷 51-58页

作者： Alireza Bahadori Hari B.Vuthaluru Saeid Mokhatab Department of Chemical Engineering Curtin University of TechnologyGPO Box 1987PerthWA 6845Australia Process Technology Manager Tehran Raymand Consulting EngineersTehranIran

Physical solvents such as ethylene glycol （EG）, diethylene glycol （DEG）, and triethylene glycol （TEG） are commonly used in wet gas dehydration processes with TEG being the most popular due to ease of regeneration and low solvent losses. Unfortunately, TEG absorbs significantly more hydrocarbons and acid gases than EG or DEG. Quantifying this amount of absorption is therefore critical in order to minimize hydrocarbon losses or to optimize hydrocarbon recovery depending on the objective of the process. In this article, a new correlation that fully covers the operating ranges of TEG dehydration units is developed in order to determine the solubility of light alkanes and acid gases in TEG solvent. The influence of several parameters on hydrocarbon and acid gas solubility including temperature, pressure, and solvent content is also examined.

关键词： solubility triethylene glycol acid gas hydrocarbon gas dehydration

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Interfacial Evolution and Migration Characteristics of acid gas Injected into a Saline Aquifer

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Chinese Journal of Chemical Engineering 2013年第4期21卷 434-441页

作者：于博刘永忠梁肖强王乐 Department of Chemical Engineering Xi'an Jiaotong University Xi'an 710049 China Key Laboratory of Thermo-Fluid Science and Engineering Ministry of Education Xi' an 710049 China

acid gas injection into saline aquifers is one of promising ways to reduce greenhouse gas emissions and to dispose hazardous waste simultaneously. On the basis of Level Set method, an improved mathematical model that described interfacial dynamics of acid gas-brine system in a deep confined saline aquifer was proposed for predicting the propagation of the acid gas plume, which was featured by using Peng-Robinson equation and modified Lucas equation to describe variations of the density and viscosity of acid gas in saline aquifers. The evolutional characte^stics of acid gas plume were obtained through numerical simulations using COMSOL Multiphysics 3.5a. The results showed that under intrinsic characteristics of aquifers and operational conditions given, the variation of acid gas density was the major factor that influences the patterns and shapes of the plume. The leading edge position of acid gas plume was intensively dependent on the acid gas composition. Under the scheme of fixed mass flow rate injection, as the molar fraction of H2S increased, the position of leading edge advanced gradually towards the injection well. Moreover, the estimation of the storage efficiency of acid gas in saline aquifers was clarified and discussed. The proposed approach and the simulation results will provide insights into the determination of optimal operational strategies and rapid identification of the consequences of acid gas injection into deep confined saline aquifers.

关键词： acid gas injection saline aquifer interracial evolution numerical simulation

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Study on the particle and acid gas removal efficiency of Water-cyclone by CFD simulation

Study on the particle and acid gas removal efficiency of Wat...

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International Conference on Environmental and Biological Sciences(ICEBS’2012);International Conference on Nanotechnology and Chemical Engineering (ICNCS’2012);International Conference on Trade,Tourism and Management(ICTTM’2012);International Conference on Automation,Control and Robotics (ICACR’2012);International Conference on Data Mining and Computer Engineering(ICDMCE’2012);International Conference on Civil,Electrical and Electronics Engineering(ICCEEE’2012)

作者： Sang Jun Lee Chun Lee Kim Sung An Kwon the Environment ＆ Energy Convergence Tech. R＆D Pyeongtaek University

A new water-cyclone was designed to remove the acidic gas and fine particles produced from the electronic industry. To characterize the gas flow in the Water-cyclone, streamline and pressure distribution were calculated by means of the CFD program. When the outlet pressure condition was -500Pa and -1,000Pa, they were compared and hydrogen sulfide in acid gas solubility showed its characteristic in this study.

关键词： Cyclone particle acid gas CFD simulation

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